Content for TR 23.831 Word version: 10.0.0
4 Scenarios and Operations
5 Architectural Requirements and Assumptions
6 Architecture Alternatives
7 Conclusions
$ Change history
4 Scenarios and Operations p. 8
4.1 Scenarios for Collaborative Session p. 8
4.1.1 Establishment of Collaborative Session at IMS session origination p. 9
4.1.2 Establishment of Collaborative Session at IMS session termination p. 10
4.1.3 Transferring media p. 10
4.1.3.1 Transferring media to UE of same IMS subscription p. 10
4.1.3.2 Transferring media to UE of different IMS subscription p. 10
4.1.4 IUT initiated by the target UE p. 11
4.1.5 Adding media p. 12
4.1.5.1 Adding media to UE of same IMS subscription p. 12
4.1.5.2 Adding media to UE of different IMS subscription p. 12
4.1.6 Deleting media p. 12
4.1.6.1 Deleting media from UE of same IMS subscription p. 12
4.1.6.2 Deleting media from UE of different IMS subscription p. 12
4.1.7 Modifying media p. 13
4.1.8 Replication controlled by IMS Network p. 13
4.1.9 Transferring Collaborative Session control p. 14
4.2 Void
4.3 Scenarios without establishing a Collaborative Session p. 15
4.4 Controller UE and Controllee UE operations p. 16
5 Architectural Requirements and Assumptions p. 18
5.1 Assumptions p. 18
5.2 Architectural Requirements p. 18
6 Architecture Alternatives p. 20
6.1 Alternative 1 p. 20
6.1.1 Architecture Reference Model p. 20
6.1.2 Control and User Plane Paths p. 21
6.1.3 Information Flows p. 21
6.1.3.1 General p. 21
6.1.3.2 Establishment of Collaborative Session upon Originating IMS Session Setup p. 22
6.1.3.2.1 Controller UE and Controllee UE belong to same IMS subscription p. 22
6.1.3.2.2 Controller UE and Controllee UE belong to different IMS subscriptions p. 25
6.1.3.3 Establishment of Collaborative Session upon Terminating IMS Session Setup p. 27
6.1.3.3.1 Controller UE and Controllee UE belong to same IMS subscription p. 27
6.1.3.3.2 Controller UE and Controllee UE belong to different IMS subscriptions p. 30
6.1.3.4 Transfer of Collaborative Session Control p. 32
6.1.3.4.1 Controller UE transferring Collaborative Session Control to a Controllee UE (same IMS subscription) p. 32
6.1.3.4.2 Controller UE transferring Collaborative Session Control to another UE with Media Transfer (same IMS subscription) p. 33
6.1.3.4.3 Session Control Transfer (CS media with Transfer of media) p. 35
6.1.3.5 Media flow transfer initiated by the target UE p. 39
6.1.3.5.1 Controller UE and Controllee UE belong to same IMS subscription p. 39
6.1.3.5.2 Controller UE and Controllee UE belong to different IMS subscriptions p. 43
6.1.3.6 Media flow transfer initiated by UE other than the target UE p. 46
6.1.3.6.1 Transferring media from Controller UE to Controllee UE belonging to different IMS subscription p. 46
6.1.3.6.2 Adding media from Controller UE to Controllee UE belonging to different IMS subscription p. 47
6.1.3.6.3 Controllee initiated Transfer of media from Controllee UE to another Controllee UE (Controller, Controllee-1 and Controllee-2 belong to different IMS subscriptions) p. 49
6.1.3.6.4 Controllee initiated Addition of media to another Controllee UE (Controller, Controllee-1 and Controllee-2 belong to different IMS subscriptions) p. 50
6.1.3.6.5 Controller initiated Release of media from Controllee UE (Controller and Controllee belong to different IMS subscriptions) p. 52
6.1.3.6.6 Controller initiated Transfer of media from Controllee UE to another Controllee UE (Controller, Controllee-1 and Controllee-2 belong to different IMS subscriptions) p. 53
6.1.3.7 Session Replication by remote party p. 54
6.1.3.7.1 Pull Mode Session Replication p. 54
6.1.3.7.2 Push Mode Session Replication (same subscription) p. 55
6.1.3.7.3 Push Mode Session Replication (different subscription) p. 56
6.1.3.8 Media Flow Replication by network p. 58
6.1.3.8.1 Replicating media in network from Controller UE to another UE belonging to same IMS subscription p. 58
6.1.3.8.2 Replicating media in network from Controller UE to another UE belonging to different IMS subscription p. 59
6.1.3.8.3 Replicating media in network from Controller UE to another UE belonging to same IMS subscription - pull mode p. 60
6.1.3.8.4 Replicating media in network from Controller UE to another UE belonging to different IMS subscription - pull mode p. 62
6.1.3.9 Inter-UE Transfer between IMS UEs and CS UEs p. 63
6.1.3.10 Session Discovery p. 65
6.1.3.10.1 General p. 65
6.1.3.10.2 Discovery of ongoing session information on other UE(s) belonging to same IMS subscription p. 65
6.1.3.10.3 Discovery of ongoing session information on other UE(s) belonging to different IMS subscription p. 66
6.1.3.11 Collaborative Session handling upon loss of Collaborative Session Control p. 66
6.1.3.12 Media modification among UEs under different subscriptions p. 68
6.1.3.12.1 Controller UE initiated media modification on Controllee UE p. 68
6.1.3.12.2 Controllee UE initiated media modification on itself p. 69
6.1.3.13 IUT without establishing a Collaborative Session between UEs belonging to different IMS subscription within same operator p. 70
6.1.4 Collaboration Profile p. 73
6.1.5 Execution of supplementary services p. 74
6.1.5.1 General p. 74
6.1.5.2 Originating Identification Presentation (OIP) p. 74
6.1.5.3 Originating Identification Restriction (OIR) p. 74
6.1.5.4 Terminating Identification Presentation (TIP) p. 74
6.1.5.5 Terminating Identification Restriction (TIR) p. 74
6.1.5.6 Communication Diversion (CDIV) p. 75
6.1.5.7 Communication Hold (HOLD) p. 75
6.1.5.8 Communication Barring (CB) p. 75
6.1.5.9 Message Waiting Indication (MWI) p. 75
6.1.5.10 Conference (CONF) p. 75
6.1.5.11 Explicit Communication Transfer (ECT) p. 75
6.1.5.12 Advice of Charge (AOC) p. 75
6.1.5.13 Closed User Groups (CUG) p. 75
6.1.5.14 Three-Party (3PTY) p. 75
6.1.5.15 Flexible Alerting (FA) p. 75
6.1.5.16 Communication Waiting (CW) p. 76
6.1.5.17 Completion of Communications to Busy Subscriber (CCBS)/Completion of Communications by No Reply (CCNR) p. 76
6.1.5.18 Customized Alerting Tones (CAT) p. 76
6.1.5.19 Malicious Communication IDentification (MCID) p. 76
6.1.5.20 Reverse Charging p. 76
6.1.5.21 Personal Network Management (PNM) p. 76
6.1.5.22 Customized Ringing Signal (CRS) p. 76
7 Conclusions p. 76
7.1 Conclusion on session discovery p. 76
7.2 Conclusion on extension of IUT and Collaborative Session capabilities to multiple UEs belonging to different IMS subscriptions p. 77
7.3 Conclusion on establishment of a Collaborative Session upon originating and terminating IMS session setup p. 77
7.4 Conclusion on control of media components of a Collaborative Session by more than one UE simultaneously p. 77
7.5 Conclusion on transfer of control of a Collaborative Session p. 77
7.6 Conclusion on media modification among UEs under different subscriptions p. 77
7.7 Conclusion on IUT initiated by the target UE p. 78
7.8 Conclusion on replication of an ongoing multimedia session from one UE on another UE p. 78
$ Change history p. 79
